Ceramics International最新文献

Effect of CaO/Y2O3 on the crystallization and properties of Li2O-Al2O3-SiO2 glass-ceramics CaO/Y2O3对Li2O-Al2O3-SiO2微晶玻璃结晶及性能的影响

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-05-01 DOI: 10.1016/j.ceramint.2025.01.559

Xinyuan Wang , Ji Zhao , Yue Tong , Jinkai Lv , Dan Wang , Yanyan Guo , Tao Zheng

{"title":"Effect of CaO/Y2O3 on the crystallization and properties of Li2O-Al2O3-SiO2 glass-ceramics","authors":"Xinyuan Wang , Ji Zhao , Yue Tong , Jinkai Lv , Dan Wang , Yanyan Guo , Tao Zheng","doi":"10.1016/j.ceramint.2025.01.559","DOIUrl":"10.1016/j.ceramint.2025.01.559","url":null,"abstract":"<div><div>Glass-ceramics with excellent mechanical properties often come at the expense of reduced transmittance. In this sthdy, we prepare Li<sub>2</sub>O-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> (LAS) system glass-ceramics that exhibit high transmittance, outstanding mechanical properties and relatively low coefficient of thermal expansion. Utilizing techniques such as differential scanning calorimetry (DSC), X-ray diffraction (XRD), scanning electron microscopy (SEM), and microhardness testing, we investigate the effects of CaO/Y<sub>2</sub>O<sub>3</sub> on the crystallization, microstructure, transparency and mechanical properties of LAS glass and microcrystalline glass. The results indicate that heat treatment at 610 °C for 2 h followed by 800 °C for 2 h yields β-quartz solid solution (Li<sub>2</sub>Al<sub>2</sub>Si<sub>3</sub>O<sub>10</sub>) as the main crystal phase. As the CaO/Y<sub>2</sub>O<sub>3</sub> ratio decreases, the grain size and thermal expansion coefficient of the glass-ceramics decrease, while the flexural strength and microhardness initially increase before subsequently declining. At a CaO/Y<sub>2</sub>O<sub>3</sub> ratio of 1, the glass-ceramics demonstrate optimal performance, achieving a transmittance of up to 80 %, a microhardness of 8.74 GPa, a flexural strength of 319.44 MPa, and a coefficient of thermal expansion of 2.91 × 10<sup>−6</sup>/°C.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 13","pages":"Pages 17889-17897"},"PeriodicalIF":5.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pb2+-doped zero-dimensional zinc-based halides possess high green purity and narrow-band emission 掺杂Pb2+的零维锌基卤化物具有较高的绿色纯度和窄带发射特性

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-05-01 DOI: 10.1016/j.ceramint.2025.01.573

Zhipeng Xiong, Changhui Miao, Yanhua Fu, Xiaoling Zeng, Dandan Sun, Lixin Yu

{"title":"Pb2+-doped zero-dimensional zinc-based halides possess high green purity and narrow-band emission","authors":"Zhipeng Xiong, Changhui Miao, Yanhua Fu, Xiaoling Zeng, Dandan Sun, Lixin Yu","doi":"10.1016/j.ceramint.2025.01.573","DOIUrl":"10.1016/j.ceramint.2025.01.573","url":null,"abstract":"<div><div>Lead-free all-inorganic perovskites exhibit superior optical performance and potential applications due to their unique low-dimensional structures and low toxicity. However, Cs<sub>2</sub>ZnBr<sub>4</sub> nanocrystals (NCs) with the zero-dimensional (0D) structure demonstrate poor optical properties because of its typical soft lattice characteristics and high density of defect states. In this study, Cs<sub>2</sub>ZnBr<sub>4</sub> encapsulated with a molecular sieve (MS) is synthesized via a solid-state method, introducing a small amount of Pb<sup>2+</sup> to achieve narrow-band green emission with a full width at half maximum (FWHM) of 20 nm. The photoluminescence quantum yield (PLQY) is improved significantly from 0.56 % to 25.97 %. The temperature-dependent PL, ultraviolet–visible absorption, and time-resolved spectra indicate that this remarkable enhancement of fluorescence characteristics is attributed to the incorporation of Pb<sup>2+</sup>, which creates new luminescent centers. This result implies higher energy utilization efficiency and alleviates the soft lattice characteristics of the 0D structure, thereby reducing non-radiative recombination. In addition, the stability of Cs<sub>2</sub>ZnBr<sub>4</sub> NCs can be enhanced by Pb<sup>2+</sup> doping, showing significant improvements in both water and thermal stability tests. The effects of different pore sizes of the MS on the fluorescence performance and stability of the synthesized samples are investigated, all of which exhibit the bright green emission with color purity greatly exceeding the National Television Standards Committee (NTSC) standards.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 13","pages":"Pages 17984-17992"},"PeriodicalIF":5.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143923197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of nickel substitution on supercapacitor and photocatalytic performances of cobalt-ferrites nanoparticles 镍取代对钴铁氧体纳米粒子超级电容器及光催化性能的影响

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-05-01 DOI: 10.1016/j.ceramint.2025.01.543

Dana Toloman , Maria Stefan , Cameliu Himcinschi , Iolanda Ganea , Lucian Barbu , Arpad Rostas , Ahmet Gungor , Emre Erdem , Adriana Popa

{"title":"Impact of nickel substitution on supercapacitor and photocatalytic performances of cobalt-ferrites nanoparticles","authors":"Dana Toloman , Maria Stefan , Cameliu Himcinschi , Iolanda Ganea , Lucian Barbu , Arpad Rostas , Ahmet Gungor , Emre Erdem , Adriana Popa","doi":"10.1016/j.ceramint.2025.01.543","DOIUrl":"10.1016/j.ceramint.2025.01.543","url":null,"abstract":"<div><div>Ni<sub>x</sub>Co<sub>1-x</sub>Fe<sub>2</sub>O<sub>4</sub> nanoparticles were synthesized by precipitation method and developed as bifunctional nanoparticles for photocatalytic and supercapacitor applications. The crystalline structure and gradual changing of the cell parameters by substituting Ni<sup>2+</sup> ions into the Co-ferrite lattice were confirmed by XRD. Raman analysis shows that the Co<sup>2+</sup> ions partially substitute Fe<sup>3+</sup> ions in tetrahedral sites, and the substitution with Ni<sup>2+</sup> ions lead to a rearrangement of cations on octahedral sites. The samples have a mixture of spherical and rectangular shapes with an average size between 4 and 14 nm for Ni-ferrite and Co-ferrite, respectively. All the samples are ferromagnetic at room temperature; both magnetic phases were evidenced by EPR spectroscopy. In substituted Co ferrite, 80 % Ni was identified as the optimum amount, ensuring the best photocatalytic activity against RhB solution under visible irradiation. The photocatalytic mechanism was explained, considering that the samples generate only superoxide radicals under visible light. The sample with the best photocatalytic performance was combined with PVDF membrane to enhance its hydrophilicity and self-cleaning properties. Additionally, Ni-Co ferrite nanoparticles were studied as electrode materials in symmetrical supercapacitor devices. Electrochemical characteristics indicate good performance and cycling stability and confirmed an appreciable increase in specific capacitance by substituting Co<sup>2+</sup> with Ni<sup>2+</sup> ions.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 13","pages":"Pages 17728-17743"},"PeriodicalIF":5.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143923280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Grinding induced fracture and oxidation mechanism for 2.5D Cf/SiC composite materials 2.5D Cf/SiC复合材料的磨削断裂及氧化机理

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-05-01 DOI: 10.1016/j.ceramint.2025.01.489

Jiaxuan Wang , Jingwen Li , Haibin Chen , Chunxue Wu , Pengfei Yu , Chongjun Wu , Steven Y. Liang

{"title":"Grinding induced fracture and oxidation mechanism for 2.5D Cf/SiC composite materials","authors":"Jiaxuan Wang , Jingwen Li , Haibin Chen , Chunxue Wu , Pengfei Yu , Chongjun Wu , Steven Y. Liang","doi":"10.1016/j.ceramint.2025.01.489","DOIUrl":"10.1016/j.ceramint.2025.01.489","url":null,"abstract":"<div><div>The 2.5D C<sub>f</sub>/SiC composite materials, known for their exceptional thermo-mechanical properties, pose significant machining challenges due to their heterogeneous structure. This paper investigates the grinding quality and oxidation mechanism for 2.5D C<sub>f</sub>/SiC composite materials under various grinding parameters. The grinding force and the surface roughness were measured as the evaluation indexes of grinding quality. A single-factor grinding test was conducted to examine the effects of feed speed, grinding depth, and rotational speed on grinding quality and oxidation mechanism. The results show that increased rotational speed reduces grinding force and surface roughness, while higher feed speed and grinding depth increases grinding force and surface defects. The fracture and material removal mechanisms, including fiber fracture, pull-out, and delamination, were analyzed using Scanning Electron Microscope (SEM). The presence of these defects increases the surface roughness and affects the surface quality of the material. The oxygen content of materials was measured by Energy Dispersive Spectroscopy (EDS) analysis, and the concept of carbon oxygen ratio was proposed to measure the oxidation degree of materials.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 13","pages":"Pages 17148-17161"},"PeriodicalIF":5.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phase formation, microstructure and magnetic properties of X-type hexaferrite based composite for microwave applications 微波用x型六铁氧体基复合材料的相形成、微观结构和磁性能

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-05-01 DOI: 10.1016/j.ceramint.2025.01.491

Xiao Tan , Qian Liu , Chang Li , Xin You , Chongsheng Wu , Tianpeng Liang , Yuanming Lai

{"title":"Phase formation, microstructure and magnetic properties of X-type hexaferrite based composite for microwave applications","authors":"Xiao Tan , Qian Liu , Chang Li , Xin You , Chongsheng Wu , Tianpeng Liang , Yuanming Lai","doi":"10.1016/j.ceramint.2025.01.491","DOIUrl":"10.1016/j.ceramint.2025.01.491","url":null,"abstract":"<div><div>Composites based on X-type hexaferrites with Gd<sup>3+</sup>-Mg<sup>2+</sup> co-substitution were synthesized through solid-phase reaction combined with <em>c</em>-axis orientation for the application of self-biased circulator. The substitution ions Gd<sup>3+</sup> and Mg<sup>2+</sup> successfully substituted the host ions Ba<sup>2+</sup> and Fe<sup>3+</sup>, respectively. The XRD pattern exhibited a compound phase formation containing W, X and α-Fe<sub>2</sub>O<sub>3</sub> phase. The oriented growth of typical hexagonal grains was observed in the microscopic morphology of natural surface and cross-section, which validates the <em>c</em>-axis preferential of X-type hexaferrites. When the substitution concentration x is 0.15, high saturation magnetization <em>M</em><sub><em>s</em></sub> (73.98emu/g), remanence <em>M</em><sub><em>r</em></sub> of 49.71 emu/g and remanence ratio <em>M</em><sub><em>r</em></sub><em>/M</em><sub><em>s</em></sub> of 0.65 were simultaneously achieved. The ferromagnetic resonance (FMR) linewidth <em>ΔH</em> measurements is performed through perturbational method based on coplanar waveguide at V band (41–46 GHz).</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 13","pages":"Pages 17172-17180"},"PeriodicalIF":5.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing the temperature measurement range of the Mn4+ ion sideband through cation substitution and adjustment of the excitation wavelength 通过阳离子置换和调节激发波长，提高了Mn4+离子边带的测温范围

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-05-01 DOI: 10.1016/j.ceramint.2025.01.524

Mengfan Li, Lei Wang, Qiufeng Shi, Haijie Guo, Jianwei Qiao, Hong Han, Cai'e Cui, Ping Huang

{"title":"Enhancing the temperature measurement range of the Mn4+ ion sideband through cation substitution and adjustment of the excitation wavelength","authors":"Mengfan Li, Lei Wang, Qiufeng Shi, Haijie Guo, Jianwei Qiao, Hong Han, Cai'e Cui, Ping Huang","doi":"10.1016/j.ceramint.2025.01.524","DOIUrl":"10.1016/j.ceramint.2025.01.524","url":null,"abstract":"<div><div>Researchers have extensively contemplated the meticulous design and development of optical thermometers utilizing luminescent materials, owing to their distinct advantages, including rapid measurement speed, exceptional sensitivity, and the absence of intrusion-related damage. However, the exploration of optical thermometers with ultra-wide temperature measurement ranges still poses a significant challenge. In this study, we employed a cation substitution strategy to optimize the luminescence performance of Mn<sup>4+</sup>-doped phosphors. Specifically, the substitution of cations after Sn<sup>4+</sup> doping resulted in an elevation of the energy level of Mn<sup>4+ 4</sup>T<sub>2g</sub>, which effectively inhibited non-radiative transitions. Consequently, it increased the quenching temperature in the Mg<sub>28</sub>Ge<sub>6.4</sub>Sn<sub>1.1</sub>O<sub>32</sub>F<sub>15.04</sub>:0.05Mn<sup>4+</sup> phosphor. Subsequently, we conducted a systematic investigation into the impact of excitation wavelengths on the quenching temperature of the material. Utilizing its high quenching temperature and the differential responses of Stokes and anti-Stokes lines to temperature, we performed a thermometry study across a broad temperature range spanning from 100 K at low temperatures to 800 K at high temperatures. At three representative excitation wavelengths with excellent thermal stability (418 nm, 365 nm, and 456 nm), we observed high relative sensitivities of 3.43 % K<sup>−1</sup>, 3.71 % K<sup>−1</sup>, and 4.57 % K<sup>−1</sup>, respectively. This work demonstrates the promising potential of designing Boltzmann ratio optical thermometers using transition metal Mn<sup>4+</sup> ions.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 13","pages":"Pages 17514-17524"},"PeriodicalIF":5.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simultaneous thermal preparation of ultra-pure ZnO nano-wires and recovery of pure MnO from waste alkaline batteries 超纯ZnO纳米线的同时热制备及从废碱性电池中回收纯MnO

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-05-01 DOI: 10.1016/j.ceramint.2025.01.533

Pravas Ranjan Behera , Rifat Farzana , Veena Sahajwalla

{"title":"Simultaneous thermal preparation of ultra-pure ZnO nano-wires and recovery of pure MnO from waste alkaline batteries","authors":"Pravas Ranjan Behera , Rifat Farzana , Veena Sahajwalla","doi":"10.1016/j.ceramint.2025.01.533","DOIUrl":"10.1016/j.ceramint.2025.01.533","url":null,"abstract":"<div><div>A simultaneous preparation of 100 % pure zinc oxide nano-wires and recovery of pure manganese oxide catalysts from waste alkaline batteries was studied by a laboratory scale thermal processing technique with temperature variation (850–950 °C) at various residence times (1–3 h) under a constant Ar atmosphere and 1 atm pressure. The change in structure and morphology of the products obtained at different experimental parameters were analysed through SEM and TEM analysis. The zinc oxide nano-wires obtained at 950 °C, 1 h showed consistency in structure and morphology and also purity as confirmed by XRD, XPS, and EDS results. The obtained zinc oxide nano-wires at 850–950 °C showed a variance in the average diameter from ∼82 to ∼127 nm as observed under TEM with an observed morphological change with increase in temperature/time. Photoluminescence spectra was obtained for ZnO nano-wires which showed two emission bands in UV range and visible range respectively. This thermal investigation process exhibits a roadway to recycle waste alkaline batteries by recovering MnO and ZnO while reducing the burden on landfills and environment alike.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 13","pages":"Pages 17593-17606"},"PeriodicalIF":5.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ligand-capped pristine and doped ZnO2 nanoparticles for enhanced photocatalytic methylene blue degradation: A DFT-supported study 配体覆盖的原始和掺杂ZnO2纳米颗粒增强光催化亚甲基蓝降解：一项dft支持的研究

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-05-01 DOI: 10.1016/j.ceramint.2025.01.482

Imran Ullah , Reinhard B. Neder , Muhammad Irfan Khan , Inam Ud Din , Huma Parwaz , Suriati Sufian

{"title":"Ligand-capped pristine and doped ZnO2 nanoparticles for enhanced photocatalytic methylene blue degradation: A DFT-supported study","authors":"Imran Ullah , Reinhard B. Neder , Muhammad Irfan Khan , Inam Ud Din , Huma Parwaz , Suriati Sufian","doi":"10.1016/j.ceramint.2025.01.482","DOIUrl":"10.1016/j.ceramint.2025.01.482","url":null,"abstract":"<div><div>In the present work, ligand-assisted zinc peroxide (ZnO<sub>2</sub>) nanoparticles (NPs) and doped ZnO<sub>2</sub> NPs (manganese (Mn) and cobalt (Co)) were synthesized via the co-precipitation method and characterized through complementary techniques. Organic ligands, including citrate (cit), 1,5-diphenyl-1,3,5-pentanetrione (pent), and dimethyl-L-tartrate (dmlt), were used to stabilize the NPs and tune their bandgap through Mn and Co doping, thereby enhancing the photocatalytic degradation of methylene blue (MB) dye. The XRD data refinement revealed cuboctahedral-shape crystallites/NPs with diameters ranging from 3 to 12.7 nm. Tauc's relation supported an optical bandgap of 2.96 eV upon 3 % Mn incorporation, which is lower than 3.07 eV for pristine ZnO<sub>2</sub> (cit-capped) NPs. In 150 min, cit-capped pristine ZnO<sub>2</sub> NPs degraded 63.34 % of MB dye; this rate increased to 77.94 %, 93 % upon 3 %, 5 % Mn-doping, and 85.13 %, 81.24 % upon 3 %, 5 % Co doping, respectively. A similar trend was observed for dmlt-capped NPs; pristine ZnO<sub>2</sub> NPs degraded 63.72 % of dye and reached to 72.26 %, 74.25 % upon 3 %, 5 % Mn-doping, and 78.56 %, 79.71 % upon 3 %, 5 % Co-doping in 150 min, respectively. Notably, pent-capped ZnO<sub>2</sub> NPs degraded 98.89 % in 90 min. However, the performance was adversely affected by Mn and Co-doping (83.20 %, 97.35 % for 3 %, 5 % Mn-doped and 78.65, 73.68 % for 3 %, 5 % Co-doped). DFT calculations suggest that Mn and Co-incorporation into ZnO<sub>2</sub> lattice improved thermodynamic and mechanical stability as well as chemical reactivity. The kinetics analysis showed that all reactions follow the pseudo-first-order kinetic model with R-squared values ranging from 84.0 to 98.5. This work demonstrates how doping can improve the performance of ligand-assisted ZnO<sub>2</sub> photocatalysts for enhanced dye degradation.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 13","pages":"Pages 17061-17078"},"PeriodicalIF":5.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel Li2Ga0.5Sb0.5O3(Li4GaSbO6):Mn4+ phosphors with multisite occupancy for efficient FIR and luminescence lifetime dual-mode thermometers 新型多位点占用Li2Ga0.5Sb0.5O3(Li4GaSbO6):Mn4+荧光粉，用于高效FIR和发光寿命双模温度计

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-05-01 DOI: 10.1016/j.ceramint.2025.01.516

Kai Li , Zhenyu Huang , Daiman Zhu

{"title":"Novel Li2Ga0.5Sb0.5O3(Li4GaSbO6):Mn4+ phosphors with multisite occupancy for efficient FIR and luminescence lifetime dual-mode thermometers","authors":"Kai Li , Zhenyu Huang , Daiman Zhu","doi":"10.1016/j.ceramint.2025.01.516","DOIUrl":"10.1016/j.ceramint.2025.01.516","url":null,"abstract":"<div><div>Growing demand in temperature detection applied to describe physico-chemical state drives the swift development of non-contact luminescent thermometers with outstanding properties containing quick temperature response, high accuracy, high temperature sensitivity and wide temperature detection range. In this work, a series of novel red-emitting Li<sub>4</sub>GaSbO<sub>6</sub>:Mn<sup>4+</sup> phosphors were synthesized using a high-temperature solid-state reaction method and further devised to applied in the FIR and luminescence lifetime dual-mode thermometers due to their luxuriant luminescence properties. Upon 469 nm excitation, the Li<sub>4</sub>GaSbO<sub>6</sub>:Mn<sup>4+</sup> presented three apparent emission peaks at 658, 674 and 689 nm, which was demonstrated to be originated from Mn<sup>4+</sup> occupying three kinds of Ga<sup>3+</sup> and Sb<sup>3+</sup> sites in the lattice by diverse excitation, emission and decay curves. Based on this, the temperature-dependent emission spectra showed that the emission intensity and decay lifetime of these three peaks presented different decreasing trend with increasing temperature, which can be served as potential application for the FIR technology and fluorescent lifetime thermometers. Simultaneously, the double modes for temperature detection will enhance the accuracy of temperature detection. Results show that the maximal relative temperature sensitivity S<sub>r</sub> is 0.64 % K<sup>−1</sup> and 2.82 % K<sup>−1</sup> for FIR and lifetime-based modes thermometry, respectively, which illustrate that as-prepared phosphors could be potentially sensing materials applied in fluorescence thermometer.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 13","pages":"Pages 17433-17444"},"PeriodicalIF":5.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143923002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flash sintering of 3D-printed 3YSZ scaffolds for bone tissue engineering 3d打印3YSZ骨组织工程支架的闪烧研究

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-05-01 DOI: 10.1016/j.ceramint.2025.01.541

Fabio C. Nunes , Patryck A. Lançoni , Gustavo H.M. Gomes , Karina F. Santos , Ester Y. Nagata , João V. Campos , Izabel C.F. Moraes , Juliana K.M.B. Daguano , Eliria M.J.A. Pallone

{"title":"Flash sintering of 3D-printed 3YSZ scaffolds for bone tissue engineering","authors":"Fabio C. Nunes , Patryck A. Lançoni , Gustavo H.M. Gomes , Karina F. Santos , Ester Y. Nagata , João V. Campos , Izabel C.F. Moraes , Juliana K.M.B. Daguano , Eliria M.J.A. Pallone","doi":"10.1016/j.ceramint.2025.01.541","DOIUrl":"10.1016/j.ceramint.2025.01.541","url":null,"abstract":"<div><div>Flash sintering is an innovative technique that employs an electric field to significantly accelerate the sintering process while reducing the furnace temperature needed for sintering, offering reduced processing times and energy consumption. This approach enables the rapid consolidation of ceramic materials within seconds, presenting new opportunities for advanced manufacturing. One promising yet not fully explored application is the densification of 3D-printed porous structures, such as scaffolds. In this study, we investigated, for the first time, the application of flash sintering to 3 mol% yttria-stabilized zirconia (3YSZ) scaffolds fabricated via material extrusion. The scaffolds were produced using an ink comprising 70 wt% ceramic particles, poly(ethylene glycol) as a binder, and Laponite nanoclay as a rheological agent. After debinding, flash sintering was performed using an electric field of 80 V cm<sup>−1</sup> to consolidate the scaffolds. The rheological properties of the ink were characterized to ensure optimal printability, while the scaffold morphology was analyzed across various regions. The ink exhibited a shear-thinning behavior, ideal for material extrusion processes. Flash sintering resulted in rapid densification of the scaffolds at lower temperatures (1000 °C/60s) compared to conventional sintering methods (1500 °C/2h). Finite element analysis was employed to model the temperature evolution of the scaffolds during flash sintering. The final scaffolds demonstrated uniform grain size , interconnected porosity, and a robust porous network, emphasizing the potential of flash sintering for fabricating complex-shaped ceramics with tailored microstructures.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 13","pages":"Pages 17704-17717"},"PeriodicalIF":5.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143923278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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